uxcell Camera Parts 40.5mm-37mm Lens Filter Step Down Ring Adapter Black Product Name : Step Down Adapter Ring;Male Thread Dia : 40.5mm/1.59" Female Thread Dia : 37mm/ 1.45";Total Size : 43 x 7mm/ 1.69" x 0.27" (D*T) Material : Metal;Color : Black Weight : 6g Package Content : 1 x Step Down Adapter Ring